Which mixture of gases is thought to have made up Earth's early atmosphere?
Amethane, oxygen, hydrogen, water vapor
Bcarbon dioxide, nitrogen, oxygen, ozone
Chydrogen, water vapor, ammonia, methane, carbon dioxide
Dozone, water vapor, carbon dioxide, ammonia
Amethane, oxygen, hydrogen, water vapor
Bcarbon dioxide, nitrogen, oxygen, ozone
Chydrogen, water vapor, ammonia, methane, carbon dioxide
Dozone, water vapor, carbon dioxide, ammonia